Improvement in gage-cocks for steam-boilers



UNITED STATES PATENT OEETCE.

-JAMES HOLDORAFT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELF ANDWILLIAM HOLDORAFI, OF SAME PLAGE.

IMPROVEMENT IN GAGE-COCKS FOR STEAM-BOILERS.

Specication forming part of Letters Patent N 0. 53,079, dated March 6,1866.

To all whom t may concern:

Be it known that I, JAMES HoLDcRAE'r, of the city of Philadelphia andState of Pennsylvania, have invented a new and Improved Gage-Cock forSteam-Boilers; and I do hereby declare that the following is a full,clear, and exact description of the construction and operation of thesame, reference being had to the annexed drawings, making a part of thisspecification, in Which- .Figure 1 is a side elevation. Fig. 2 is avertical longitudinal section 5 Fig. 3, a transverse section on the linel 2 in Fig. 2; Fig. 4, a similar section on the line 3 4 of Fig. 2 5Fig. 5, a view of the washer employed. Fig. 6 is a side elevation of amodified form of my improvement.

The plug-cock in general use is liable to be rapidly worn out by thefriction between the plug and. socket, the plug becoming loose and thecock getting leaky.

In the drawings, A, Fig. 2, is a tube to be screwed into the boiler orother vessel, and is provided with a projection, c.

B is a lever provided with a projection, b, and an offset, b', having anorilice, O, into which is inserted a piece of an elastic or yieldingsubstance, as gum or india-rubber, D. The gum is held in place yby ascrew, E, which presses it against shoulders of the offset b', as shown.The tube A and the lever B are connected by a washer-joint formed byplacing a metallic washer, G, between the projections a and b, andsecuring the Whole together by.

Projections a and b are This improved cock is more especially de! signedto be used as a try-cock for steamboilers; but it may be substitutedwith advantage for any ordinary tap.

A washer employed in the manner described diminishes the friction, andcan be applied with advantage in all cases Where flexible joints areformed by two abutting links.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

The employment of a washer, G, in connection with iIeXible joints, inthe manner and for the purpose substantially as described.

JAMES HOLDORAFT.

